Pump.



R. GONRADER.

PUMP.

APPLICATION FILED SBPT.19, 1910.

Patented July 15, 1913.

. 5 v 5 1 m m W F. v 1 1 a I w 3L e a m l! UNITED STATES PA TENT OFFICE;

RUDOLPH conserves, or ERIE, PENNSYLVANIA.

PUMP.

To all whom it may concern Be it known t hat I, RUDOLPl-l CoNnAonR, acitizen of the United States, residing at Erie, in the count-y of Erieand State of Pennsylvania, have invented new and useful Improvements inPumps, of which the following is a specification.

This invention relates to pumps, and consists in certain improvements inthe construction therein, as will be hereinafter fully described andpointed out in the claims.

The invention is illustrated in the accompanying drawings as follows:

Figure l is approximately a central section through the device, thesection being on the line 11 in Figs. 5 and 6. Fig. 2 a section on theline 22 in Fig. 3. Fig. 3 a section on the line 3-3 in Fig. 2. Fig. A asection on the line 4--4 in Fig. 1. Fig. 5 a section on the line 55 inFig. 1. Fig. 6 a section on the line 6 6 in Fig. 1. Fig. 7 a section onthe line 7 7 in Figs. 2 and 1 marks the working barrel, 2 an extensionon the working barrel, 3 a standing barrel fitting, and 4 a standingvalve.

The plunger is made up of the tubular plunger section 5 which forms ametallic sliding fit with the working barrel 1. A fitting 6 is screwedinto the upper end of the tube 5. The plunger is screw threaded for thispurpose, and the fitting 6 has an annular shoulder extending preferablyflush with the surface of the tube 5. A plunger valve cage 7 is in theform of a cup forming a sand trap for the plunger. This cage has aninternal. screw threaded on its lower end, and is screwed into thefitting 6. The surface of the cup forms a sliding fit with the workingbarrel, the surfaces of the shoulder 6 and tubs 5 forming preferably acontinuous surface. A plunger valve seat 8 rests on the shoulder 6 and acheck valve 9 is carried in the cage or cup 7 and operates upon thisseat. A sucker rod connection 10 is secured to the webs 11 which extendfrom this sucker rod connection 10 to the walls of the cup 7 forming apassage through which the liquid passing the plunger discharges. Theupper edge 12 of the cup is above the tops of the webs 11, thus forminga continuous opening for the top of the cup, and thus preventa leakageof sand at points on the edge of the cup.

The lower end of the tube 5 has the lips 18 preferably formed integrallywith the tube with a connecting bar 16. A perfora- Specification ofLetters Patent.

Application filed September I9, 1910.

Patented July 15, 1913. Serial no. 582,610.

tion 17 is arranged in this bar, a rod 18 secured to the top of thestanding valve and extends upwardly through the perforation 17. This rodnear its upper end has screw threads 19 on which the nut 20 is secured,forming a shoulder which engages the bar 16 when the plunger iswithdrawn from the pump, and thus lifts the standing valve with theplunger. The tube 5 is of sufficient length so that in the normaloperation of the pump, the shoulder 20 does not engage the bar so as tointerfere with. the ordinary reciprocation of the plunger.

The rod 18 has the extension 21 above the screw threads 19 which whenthe plunger is in its lower position engages the check valve 9 so as tolift it from its seat, thus permitting the liquid above the plunger todrain past the plunger valve.

The sides of the lips 13 together with the bar 16 form wrench holdsurfaces by means of which the tube 5 may be readily held for unscrewingthe cup 7 so as to expose the valve seat and valve. This is verydesiraljile because it is difficult to so engage the surfaces of thetube forming the plunger as to unscrew the parts without injuriouslymarring these surfaces. The sand trap may be held through the sucker rodextension 10.

By making the lips 13 with the bar 16 integral, with the tube, a largeopening may be left leading to the tube and still get sufficientstrength to readily lift the standing valve with the plunger. This isdesirable because with the small space available in deep wells, it isdifficult to get suflicient strength to lift the standing valve,especially where it becomes jammed or wedged in its socket, and at thesame time have sufficient opening for the movement of liquid.

hat I claim as new is:

1. In a pump, the combination of a work ing barrel, a plunger sleevehaving a lip integral with the sleeve on its lower end forming wrenchhold surfaces; a. valve seat in the plunger; and screw threaded meansfor locking the seat in the plunger.

2. In a pump, the combination of a working barrel; a plunger sleeve inthe barrel, having lips integral with the sleeve extending from itslower end, forming wrench hold surfaces and an internal shoulder; avalve seat in the plunger; screw threaded means for locking the seat inthe plunger; a standing valve; a rod extending upwardly from thestanding valve; and a means on the rod for engaging the shoulder.

3. In a pump, the comblnation of a working barrel; a plunger sleeve inthe working seat in the plunger; a standing valve; a rod extendingupwardly from the standing valve; and a means on the rod for engagingthe shoulder.

4. In a pump, the combination of a working barrel; a plunger sleeve inthe working barrel having lips extending integrally therefrom, formingan integral shoulder; a standing valve; a rod extending upwardly fromthe standing valve into the sleeve; and means on the rod for engagingthe integral shoulder.

5. In a pump, the combination of a working barrel; a plunger sleeve inthe working barrel having integral lips extending downwardly therefromwith a connecting bar; a standing valve; a rod extending upwardly fromthe standing valve into the sleeve; and means on the rod for engagingthe bar.

6. In a pump, the combination of a work ing barrel; a plunger sleeve inthe working barrel, said sleevdhaving downwardly eX- tending lipsintegral with the sleeve and a connecting bar, the lips forming sideopenings to the plunger, and the bar having a central perforation; astanding valve; :1 rod extending upwardly from the standing valve andmeans on the rod for engaging the bar. H

In testimony whereof I have hereunto set my hand in the presence of twosubscribing 40 witnesses. V

RUDOLPH OONRADER.

WVitnesses: I H. C. LORD,

I BLANCHE HARTMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. C.

